<template>
<el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
 <!-- 侧边栏 -->
<el-aside :width="isCollapse ? '64px' : '200px'">
  <div class="toggle-button" @click="toggleCollapse">給老子缩</div>
    <el-menu class="el-menu-vertical-demo"
          background-color="#545c64"
          text-color="#fff"
          active-text-color="#ffd04b" unique-opened :collapse="isCollapse" :router='true'>
     <!--以级菜单（下拉）-->
     <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
         <!--下拉菜单标题和图标-->
         <template slot="title">
         <i :class="iconsObj[item.id]"></i>
             <span>{{item.authName}}</span>
         </template>
         <el-menu-item  :index=" '/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id">
           <i class="el-icon-menu"></i>
             {{subItem.authName}}
         </el-menu-item>
     </el-submenu>
</el-menu>
    </el-aside>
      <!-- 右侧内容主体 -->
      <el-main><router-view></router-view></el-main>
  </el-container>
</el-container>

</template>

<script>
export default {
  data () {
    return {
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false
    }
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      // 2.1 发送请求
      const { data: res } = await this.$http.get('menus')
      // 2.2 错误处理
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      // 2.3 成功处理
      // a.【加工数据]】 如果数据不符合我们的要求，我们在这里会对数据进行加工处理
      this.menulist = res.data // b. 【赋值操作】
    },
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    }
  },
  created () {
    this.getMenuList()
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}

</style>
